Yoro Valley

Nestled in the center of the Boso Peninsula in Chiba Prefecture, Yoro Valley is one of the region’s most beautiful natural destinations. Formed by the Yoro River, the valley is famous for its forested walking trails, waterfalls and hot springs. Although it is only a few hours from central Tokyo, the area feels far removed from the rush of city life.

Yoro Valley

Photo by: PIXTA/ nkuripinky

Yoro Valley changes character with each season. Fresh greenery covers the mountains from spring to summer. At the same time, autumn transforms the gorge into a landscape of vivid red, orange and yellow leaves. The valley is especially famous for its late autumn colors, earning a reputation as one of Japan’s latest places to enjoy the autumn foliage season. 

Awamata Falls and Riverside Walks

Photo by: PIXTA/ M・H

The most famous attraction in the Yoro Valley is Awamata Falls. It is about 30 meters high and 100 meters long. Awamata Falls flows gently over the rocks rather than dropping sharply like a steep waterfall.

During summer, the surrounding trees provide shade and cool air, making the walk especially refreshing. In autumn, the colorful leaves around the falls create one of the valley’s finest views.

Walking trails extend around the waterfall and along the Yoro River, allowing visitors to experience the valley at a slower pace. Further along the gorge, smaller waterfalls such as Chiyo Falls, Bandai Falls and Konjin Falls offer equally peaceful scenery away from the larger crowds.

Scenic Stops and Local Favorites

Photo by: PIXTA/ ふくいのりすけ

Beyond the waterfalls, Yoro Valley has some other unique landmarks. The Mukaiyama-Kyoei Tunnel known as “double tunnel”. This 1940s tunnel features two overlapping exits, creating a mysterious atmosphere enhanced by light from the upper opening. Nearby, Kannon Bridge, a striking vermilion double-arched structure, contrasts beautifully with the surrounding greenery.

Rental e-bikes make it easy to explore the eight-kilometer stretch between scenic spots, temples and riverside paths. Visitors often stop at local shops and cafes along the route, including the well-known mountain gelateria Yamaneko, which serves seasonal gelato made with ingredients from Chiba Prefecture.

The tourist center is filled with souvenirs and freshly harvested local vegetables and many people visit specifically for its frozen wild boar and deer meat.

Hot Spring Experience

The Yoro Valley is also known as the largest hot spring area on the Boso Peninsula. After a day of hiking or cycling, many visitors like to relax in the open-air baths overlooking the forest and river. The hot springs here are famous for their dark, mineral-rich water, locally known Kuroyu. This water is known for its smooth feel and comforting warmth.